Method and system of orthogonalizing signal transmitted from BS applied to OFDM access
    11.
    发明申请
    Method and system of orthogonalizing signal transmitted from BS applied to OFDM access 审中-公开
    将从BS发送的信号正交化的方法和系统应用于OFDM接入

    公开(公告)号:US20070258529A1

    公开(公告)日:2007-11-08

    申请号:US11789673

    申请日:2007-04-25

    IPC分类号: H04L27/28

    摘要: A method of orthogonalizing signals transmitted from a BS in an OFDMA system, at a transmitting end, includes a) performing encoding, interleaving and modulation on original information bits; b) allocating sub-carriers with equivalent intervals to a sub-channel, and dividing channels into two parts of a cell edge user channel and a center area channel; c) mapping modulated information symbols to the corresponding sub-carriers; d) performing orthogonalizing processing on the two parts of channels; e) for a user at an edge of the cell, according to result of step b), dividing an OFDM symbol into subsections of equal length; f) multiplying the subsections obtained from step e) by a corresponding orthogonalizing sequence of the cell; g) adding the OFDM symbols of the two parts together to form a whole OFDM symbol; h) adding a cyclic prefix for the system; and i) performing D/A conversion, RF processing and feedback over a transmitting antenna on a base-band signal.

    摘要翻译: 一种在发送端正交化从OFDMA系统发送的信号的方法包括:a)对原始信息比特执行编码,交织和调制; b)向子信道分配具有等效间隔的子载波,并将信道划分为小区边缘用户信道和中心区域信道的两部分; c)将调制信息符号映射到相应的子载波; d)对信道的两部分执行正交化处理; e)根据步骤b)的结果,针对小区边缘的用户,将OFDM符号划分成等长的子段; f)将从步骤e)获得的子段乘以单元的对应正交化序列; g)将两个部分的OFDM符号相加在一起以形成整个OFDM符号; h)为系统添加循环前缀; 以及i)在基带信号上通过发送天线执行D / A转换,RF处理和反馈。

    Transmitting/receiving apparatus and method in a mobile communication system
    14.
    发明申请
    Transmitting/receiving apparatus and method in a mobile communication system 审中-公开
    移动通信系统中的发送/接收装置和方法

    公开(公告)号:US20070002969A1

    公开(公告)日:2007-01-04

    申请号:US11450495

    申请日:2006-06-09

    IPC分类号: H04L27/36 H04L27/20 H03D1/24

    摘要: A transmitting/receiving apparatus and method in a mobile communication system are provided. In a transmitter, an encoder encodes input information data and outputs systematic bits on a first channel and redundancy bits on a second channel. A first channel interleaver interleaves the systematic bits and a second channel interleaver interleaves the redundancy bits. A modulator maps one channel data of I and Q channel data, received from the first channel interleaver and another channel data of the I and Q channel data, received from the second channel interleaver to a modulation symbol using different mapping rules for I and Q channels.

    摘要翻译: 提供了一种移动通信系统中的发送/接收装置和方法。 在发射机中,编码器对输入信息数据进行编码并在第一信道上输出系统比特,并在第二信道上输出冗余比特。 第一信道交织器交织系统比特,并且第二信道交织器交织冗余比特。 调制器将从第一信道交织器接收的I信道数据和Q信道数据的一个信道数据和从第二信道交织器接收的I和Q信道数据的另一个信道数据映射到使用针对I和Q信道的不同映射规则的调制符号 。

    Frequency overlay communication system and transmission/reception method thereof
    15.
    发明申请
    Frequency overlay communication system and transmission/reception method thereof 有权
    频率覆盖通信系统及其发送/接收方法

    公开(公告)号:US20060268677A1

    公开(公告)日:2006-11-30

    申请号:US11443421

    申请日:2006-05-30

    IPC分类号: H04J11/00

    CPC分类号: H04L27/2628 H04L27/265

    摘要: Provided is a method and apparatus for transmitting/receiving data in a frequency overlay communication system. A transmitter generates a data stream for data transmission, and performs Inverse Fast Fourier Transform (IFFT) on the generated data stream according to a predetermined first frequency band before transmission. Upon receiving a particular signal, a receiver performs Fast Fourier Transform (FFT) on the received signal according to a predetermined second frequency band, and restores the received signal.

    摘要翻译: 提供了一种在频率覆盖通信系统中发送/接收数据的方法和装置。 发射机产生用于数据传输的数据流,并且在发射之前根据预定的第一频带对生成的数据流执行快速傅里叶逆变换(IFFT)。 在接收到特定信号时,接收机根据预定的第二频带对所接收的信号执行快速傅里叶变换(FFT),并恢复所接收的信号。

    Apparatus and method for transmitting bit-interleaved coded modulation signals in an orthogonal frequency division multiplexing system
    16.
    发明申请
    Apparatus and method for transmitting bit-interleaved coded modulation signals in an orthogonal frequency division multiplexing system 审中-公开
    用于在正交频分复用系统中传输位交织的编码调制信号的装置和方法

    公开(公告)号:US20060250944A1

    公开(公告)日:2006-11-09

    申请号:US11399219

    申请日:2006-04-06

    IPC分类号: H04J11/00

    CPC分类号: H04L27/2602

    摘要: Disclosed is an apparatus for transmitting a bit-interleaved coded modulation (BICM) signal in an orthogonal frequency division multiplexing (OFDM) system. A serial-to-parallel (S/P) converter generates bit streams using coded bits according to the number of transmission antennas and a modulation order of a predetermined modulation scheme. An interleaver applies at least one offset to the bit streams and performs interleaving on the offset-applied bit streams. A combiner combines the interleaved bit streams according to the number of transmission antennas.

    摘要翻译: 公开了一种用于在正交频分复用(OFDM)系统中发送比特交织编码调制(BICM)信号的装置。 串行到并行(S / P)转换器根据发送天线的数量和预定调制方案的调制阶数,使用编码比特生成比特流。 交织器将至少一个偏移应用于比特流,并对偏移应用的比特流执行交织。 组合器根据发送天线的数量组合交织比特流。

    Apparatus and method for retransmitting data in a communication system
    19.
    发明申请
    Apparatus and method for retransmitting data in a communication system 审中-公开
    用于在通信系统中重传数据的装置和方法

    公开(公告)号:US20060182199A1

    公开(公告)日:2006-08-17

    申请号:US11355269

    申请日:2006-02-15

    IPC分类号: H04L27/04 H04B7/10

    摘要: A communication system includes a transmitter and a receiver. If there is information data to transmit to the receiver, the transmitter generates a first transmission frame by signal-mapping the information data according to a first signal point mapping rule, and transmits the first transmission frame to the receiver. Upon receiving from the receiver a notification indicating a failure to normally receive the first transmission frame, the transmitter generates a second transmission frame by signal-mapping the information data according to a second signal point mapping rule preset such that a minimum squared Euclidean distance with the first transmission frame is maximized, and transmits the second frame to the receiver.

    摘要翻译: 通信系统包括发射机和接收机。 如果存在要发送到接收机的信息数据,则发射机通过根据第一信号点映射规则对信息数据进行信号映射来生成第一传输帧,并将第一传输帧发送到接收机。 从接收器接收到指示正常接收第一传输帧的通知的通知时,发射机通过根据预设的第二信号点映射规则对信息数据进行信号映射来生成第二传输帧,使得与所述第一传输帧的最小平方欧几里德距离 第一传输帧被最大化,并且将第二帧发送到接收机。

    Cell search apparatus and method in a mobile communication system using multiple access scheme
    20.
    发明申请
    Cell search apparatus and method in a mobile communication system using multiple access scheme 审中-公开
    移动通信系统中的小区搜索装置和方法,使用多址方案

    公开(公告)号:US20060126491A1

    公开(公告)日:2006-06-15

    申请号:US11231255

    申请日:2005-09-20

    IPC分类号: H04J11/00

    摘要: A cell search apparatus and method in an OFDM mobile communication system are provided. In the cell search apparatus, a symbol synchronization acquirer acquires OFDM symbol synchronization by performing CP correlation for a plurality of OFDM symbol intervals. A frame cell synchronization acquirer sorts received OFDM symbols according to the acquired OFDM symbol synchronization, and acquires frame cell synchronization by performing preamble correlation for a plurality of frame cell intervals. A pilot pattern detector sorts received frame cells according to the acquired frame cell synchronization, and detects a pilot pattern for identifying a base station by monitoring a plurality of frame cells.

    摘要翻译: 提供了一种OFDM移动通信系统中的小区搜索装置和方法。 在小区搜索装置中,符号同步获取器通过对多个OFDM符号间隔执行CP相关来获取OFDM符号同步。 帧单元同步获取器根据获取的OFDM符号同步对接收到的OFDM符号进行分类,并且通过对多个帧单元间隔执行前导码相关来获取帧单元同步。 导频模式检测器根据所获取的帧单元同步对接收到的帧单元进行分类,并且通过监视多个帧单元来检测用于识别基站的导频模式。